My 3rd gen iPad running iOS 9 is not recognized by my iO Dock

I bought Alesis IO Dock from a friend. He had Ipad 2nd gen and with him everything worked

I have Ipad 3rd. gen installed now IOS9.

But after connecting the Ipad does not see the Alesis (check this by going Settings> General> About).
I would add that as I connect with each other Alesis and Ipad is nothing happens.

What can I do to solve the problem?
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